| Hong Kong Tongtong International Trade Co., Limited | | Live |
| HONG KONG TONGTONG GROUP LIMITED | Private company limited by shares | Live |
| HONGKONG TONGTONG LIMITED | Private company limited by shares | Live |
| TONGTONG SOLAR ENERGY (HONGKONG) GROUP LIMITED | Private company limited by shares | Dissolved |
| Tongtong (HongKong) Renewable Energy Technology Limited | Private company limited by shares | Live |
| HONGKONG TONGTONG TECHNOLOGY LIMITED | | Live |
| HONGKONG TONGTONG INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| Tongtong International Co., Limited | | Live |
| Tongtong International Ship Lease Co., Limited | Private company limited by shares | Live |
| TONGTONG YISAN (KOREA) INT'L FINERY GROUP LIMITED | Private company limited by shares | Dissolved |